Answer:
C ![11+13+15+17+...](https://tex.z-dn.net/?f=11%2B13%2B15%2B17%2B...)
Step-by-step explanation:
Consider the series
![\sum\limits_{n=3}^{\infty}(2n+5)](https://tex.z-dn.net/?f=%5Csum%5Climits_%7Bn%3D3%7D%5E%7B%5Cinfty%7D%282n%2B5%29)
The nth term of series is ![a_n=2n+5](https://tex.z-dn.net/?f=a_n%3D2n%2B5)
The bottom index tells you that n starts changing from 3, so
![a_3=2\cdor 3+5=11\\ \\a_4=2\cdot 4+5=13\\ \\a_5=2\cdot 5+5=15\\ \\a_6=2\cdot 6+5=17\\ \\...](https://tex.z-dn.net/?f=a_3%3D2%5Ccdor%203%2B5%3D11%5C%5C%20%5C%5Ca_4%3D2%5Ccdot%204%2B5%3D13%5C%5C%20%5C%5Ca_5%3D2%5Ccdot%205%2B5%3D15%5C%5C%20%5C%5Ca_6%3D2%5Ccdot%206%2B5%3D17%5C%5C%20%5C%5C...)
Thus, the sum of all terms is
![11+13+15+17+...](https://tex.z-dn.net/?f=11%2B13%2B15%2B17%2B...)
The answer is 5 hope that helps
Answer:
The second one
Step-by-step explanation:
Answer:
f(x)=4x^2
Step-by-step explanation:
I'm guessing the third function 4x squared. It curves up with the data points while all the other functions create straight lines.